Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f967a6ac72f6d9…

MALICIOUS

PDF

68.6 KB Created: 2020-12-28 08:35:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bfd65bbf6963d90d7866cba8e1384d7d SHA-1: 9b84c3da709c649eb1d66507b814e6986154ec5c SHA-256: 04f967a6ac72f6d92678528a3a2729880911265521c547e3c59c9445715e1460
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. The document contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection strategy. The primary external URI, 'https://traffine.ru/aws?utm_term=hallelujah+shrek+sheet+music+free+pdf', appears to be a lure disguised as a search result for sheet music, likely intended to trick users into clicking through to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/aws?utm_term=hallelujah+shrek+sheet+music+free+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5faf395ac4397.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5fe5da02d474c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5fae4d031aaf1.pdfIn PDF document text
    • https://nevonanopovew.weebly.com/uploads/1/3/4/3/134335048/gisepon_xenoweto_dusanogewisewa_jijoxaj.pdfIn PDF document text
    • https://kivuvuvilex.weebly.com/uploads/1/3/2/7/132741385/tifaripebo.pdfIn PDF document text
    • https://wovuxekas.weebly.com/uploads/1/3/4/3/134379471/girogejibatomen-bemesonuzet-kudamutalife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8737c68196a.pdfIn PDF document text
    • https://toxodapakaxoza.weebly.com/uploads/1/3/4/5/134525452/lomuxuvedozal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379491/normal_5fe971b238f90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5f8e6e43d423a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/94500950-9c6d-49b2-bcd4-14f534e25c70/sifiwejepikonixil.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF26 5496 bytes
SHA-256: fc3c63c228f94830f03a610f2ee80b00cfa4e68493cff4add5845411c027ea2f
font_01_sfnt_off0000e1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B3 10496 bytes
SHA-256: e4f69b10f444b25ba05894eb006337747d201d93c9cc8bffb0c7d054cb20167a

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